How to use

VictoryThemeDefinition

in

victory

render() {
  const { courses } = this.state;
  if (courses.length === 0) return null;
  return (
   <Paper style={{ height: 'fit-content', margin: 'auto' }} depth={1}>
    <VictoryLabel
     text="My Courses"
     x={225}
     y={30}
     textAnchor="middle"
     style={{ fontSize: 25 }}
    />
    <VictoryPie
     data={courses}
     labelRadius={130}
     theme={VictoryTheme.material}
     x="subject"
     y="count"
     colorScale={colours}
    />
   </Paper>
  );
 }